Vapor Trail no Ushiro

"My heart just can't forget you."

Renji, an aspiring novelist, nearly collapses from anemia and is saved by Hakuto, a medical student. Even though it should be their first time meeting, there's a strange sense that their hearts already know each other. As their connection deepens, their encounter begins to awaken the lingering feelings of someone from the past...

(Source: Akita Shoten, translated)